CAPITAL STOCK AND STOCK-BASED AWARDS (Detail) - Schedule of restricted stock units under the management stock purchase plan (USD $)	12 Months Ended
May 31, 2012	May 31, 2011
MSPP RSUs allocated	22,486	121,550
Purchase price per unit (in Dollars per share)	$ 17.78	$ 16.90

Price per share of restricted stock units under the management stock purchase plan during the period.

No definition available.

Name:	schl_RestrictedStockUnitsPricePerShareUnderManagementStockPurchasePlan
Namespace Prefix:	schl_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration